Diacamma leve

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Diacamma leve
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Ponerinae
Tribe: Ponerini
Genus: Diacamma
Species: D. leve
Binomial name
Diacamma leve
Crawley, 1915

Diacamma leve casent0900668 p 1 high.jpg

Diacamma leve casent0900668 d 1 high.jpg

Specimen Labels

This species is allopatric with the other Australian species of the genus, being found in the Northern Territory while the others occur in Queensland. In the Darwin region this species is restricted to riparian areas associated with the Howard and Daly River systems (A. Andersen, pers. comm.).

At a Glance • Gamergate  
 

Identification

Dorsal surfaces of pronotum and head with at most very fine, indistinct sculpturing. Diacamma leve can be separated from other Australian species by the form of this sculpturing.

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Australasian Region: Australia (type locality).

Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Castes

Nomenclature

The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.

  • leve. Diacamma australe var. levis Crawley, 1915a: 134 (w.) AUSTRALIA. Junior synonym of australe: Taylor & Brown, D.R. 1985: 29. Revived from synonymy and raised to species: Shattuck & Barnett, 2006: 17.

Type Material

Taxonomic Notes

Crawley (1915) correctly recognised this taxon as distinct from typical Diacamma australe (the only other described species at that time), although by today's standards it warrants full-specific rather than subspecific status.

There is a trend for the head to be broader for a given head length (as shown by the larger CI values) in this taxon, but some specimens overlap with specimens of all other Australian species, reducing the usefulness of this character. It is possible that the differences in sculpturing are simply geographic variation and this taxon is conspecific with Diacamma schoedli (with which it shares petiolar shape). However, there is currently no indication of intermediate forms or clinal variation in this character and the noted differences are consistent across all available material of both taxa. Thus current material suggests two taxa are involved, rather than a single variable species. The synonymy of this species with Diacamma australe by Taylor & Brown (1985) was not supported by Shattuck (2006).

Description

Measurements (n = 6): HL 2.52 - 2.78 mm, HW 2.15 - 2.38 mm, CI 81 - 87, SL 2.84 - 3.14 mm, SI 129 - 141, ML 3.73 - 4.19 mm, MTL 2.29 - 2.59 mm, PH 1.25 - 1.50 mm, PL 0.98 - 1.06 mm, PI 70 - 84.

References